a proof

• Dirty proof : a proof wih many corection marked on it
  稿样:因错误多而画有很多改正的稿样。
• A digital signature stamps a proof of origin authenticity
  数字签名标志原始的真实性的验证。
• Get help requesting a proof of delivery for your shipment
  为您的货件获得所需派送证明的说明。
• A proof to the analysis property of sumfaction of power series
  幂级数和函数分析性质的一种证明
• Wiglaf was a proof of concept , not a final product
  Wiglaf是对概念的证明，不是一个最终的产品。
• If anybody wants a sheep , that is a proof that he exists .
  他想要一只小羊，这就证明他的存在。 ”
• Is largely a proof - of - concept : a few things are still missing
  在很大程度上是概念证明：还缺少几点。
• Ask students to demonstrate a proof of the pythagorean theorem
  让学生演示毕德哥拉斯定理的一种证明。
• I understood that this could be considered as a proof to me
  我明白，这可以算是我对自己的小小证明吧。
• Need unit , hospital opens a proof
  需要单位、医院开证实。